JPH0751284B2 - Manufacturing method of laminated wood - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for manufacturing a laminated lumber by laminating and bonding a plurality of wooden lamina.

[Prior Art] Laminated wood made by laminating and adhering a large number of wooden lamina has been widely used in various fields, but in recent years, it has been used as a relatively large-scale structural member such as a beam or a pillar of a large wooden building. Is also being used.

The manufacturing process of the laminated wood according to FIGS. 4 to 6 is shown. In FIG. 4, reference numeral 1 denotes a wooden lamina, and when the wooden lamina 1 is moved in the longitudinal direction, an adhesive is applied to the upper portion thereof. A hopper 3 for use is installed, and the adhesive 2 is discharged from the hopper 3 onto the surface of the lamina 1 that moves.

In this way, the adhesive 2 is applied to one side of the wooden lamina 1, and as shown in FIG. 5, a large number of the wooden lamina 1 with the adhesive 2 are laminated to form a laminated body 4 and As shown in FIG. 6, the whole laminated body 4 is pressure-bonded in the laminating direction to obtain a laminated member 5 in which the whole is integrated.

However, as described above, the wooden lamina 1 only with the adhesive 2 is used.
Regarding the structural properties of conventional laminated timbers that have been joined together, especially bending properties are not always sufficient, and especially when using laminated lumber as structural members such as beams and columns of large-scale buildings as described above. Has the problem of having to make a large cross section.

Therefore, as can be seen in Japanese Utility Model Laid-Open No. 61-128005, Japanese Utility Model Laid-Open No. 1-68803, Japanese Utility Model Laid-Open No. 1-1142714, Japanese Utility Model Laid-Open No. 1-1142715, for example, a reinforcing material is applied to the outer layer portion of the laminated lamina. Is proposed to be embedded.

In Japanese Utility Model Laid-Open No. 61-128005, the reinforcing material is a plate-like material such as metal, and in Japanese Utility Model Laid-Open No. 1-68803, the reinforcing material is a mesh of reinforcing steel, carbon fiber, aramid fiber or ceramic having a high Young's modulus. In Japanese Utility Model Publication No. 1-142714 and Japanese Utility Model Publication No. 1-142715, the reinforcing material is a long fiber of high-rigidity fiber such as carbon fiber, and the bending rigidity of the laminated material is improved by embedding the reinforcing material. It is intended to improve.

Among them, the long fibers as the reinforcing material in Japanese Utility Model Publication No. 1-142714 and Japanese Utility Model Publication No. 1-142715 have fibers having excellent tensile properties, for example, carbon fibers, glass fibers, steel fibers, aramid fibers, etc. Which are twisted together and cut into a predetermined length, or formed as a fiber cloth, the long fibers 6 are located in the outermost layer of the lamina laminate 4 as shown in FIG. It is sandwiched and adhered between the lamina 1a, 1a and the lamina 1, 1 inside them.

A large number of these long fibers 6 are arranged linearly along the length direction of the lamina laminate 4 and in a state of being substantially parallel to each other.

By the way, in order to manufacture the laminated member 5 having the above-mentioned structure, as shown in FIG. 8, only the lamina 1 is temporarily adhered to the intermediate portion or temporarily fixed by an appropriate means, and appropriate jigs 11 are provided on the upper surface side and the lower surface side thereof. The long fibers 6 are arranged in a state in which a predetermined tension is applied, and the outermost lamina 1a, 1a are provided above and below the long fibers 6.
By placing and pressing from above and below,
The long fibers 6 are sandwiched at the same time as 1a, 1a, 1 are bonded together.

[Problems to be Solved by the Invention]

However, in the conventional method for manufacturing a laminated material shown in FIGS. 7 and 8, in order to sandwich the long fiber 6 as a reinforcing material, the long fiber 6 is applied with a predetermined tension by an appropriate jig 11. A step of arranging along the lamina 1 and 1a is necessary, and time and labor are required accordingly.

The object of the present invention is to eliminate the disadvantages of the conventional example, and in a method for producing a laminated wood by laminating and joining a plurality of wooden lamina, fibers as a reinforcing material are easily and quickly arranged between the lamina in a flow operation. An object of the present invention is to provide a method of manufacturing laminated wood that can be installed.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention is a method for manufacturing a laminated wood by laminating and joining a plurality of wooden lamina, in which the wooden lamina is moved in the length direction, and a coating hopper with a built-in stirrer is installed above it. Then, the short fibers and the adhesive are put into the coating hopper, and the mixture of the short fibers and the adhesive is discharged from the outlet of the coating hopper toward one lamina surface,
Further, the gist of the present invention is to bond the lamina to each other by pressure to bond at least the lamina of the outer layer portion of the laminated wooden lamina.

[Action]

According to the present invention, the short fibers are mixed with the adhesive, and the lamina can be bonded with the fibers sandwiched by simply applying the adhesive containing the short fibers to the lamina surface.

When the lamina are adhered and fixed to each other, the short fibers are arranged by being fixed with an adhesive, so that the short fibers prevent bending deformation, and therefore the bending characteristics are improved.

In the method of manufacturing this laminated material, the lamina that constitutes it is moving in the lengthwise direction, so it can be manufactured quickly and accurately by a flow operation. Since it uses the coating hopper with a built-in stirrer installed above the wooden lamina that moves in the direction, a certain amount of adhesive can always be precisely applied to the position that becomes the lamina's adhesive surface, and accuracy is improved. A product with a high standard can be obtained.

〔Example〕

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a side view showing an embodiment of the method for manufacturing laminated wood according to the present invention, and shows a step corresponding to FIG. 4 showing the steps of the conventional example.

As in the conventional case, when the wooden lamina 1 is moved in the length direction, the adhesive application hopper 3 is installed above, and the application hopper 3 has the stirrer 8 inside.

Further, a short fiber hopper 9 and an adhesive hopper 10 were arranged side by side above the coating hopper 3.

As the short fibers 7 to be put in the short fiber hopper 9, there are carbon fiber, steel fiber and the like, and the short fibers 7 are put into the hopper 9 from the hopper 9 and the adhesive 2 is put into the coating hopper 3 from the hopper 10.

Then, in the coating hopper 3, the short fibers 7 and the adhesive 2 are mixed by a stirrer 8 and the adhesive 2 containing the short fibers 7 is directed from the outlet of the tip of the hopper 3 to the surface of the lamina 1 which moves horizontally. To discharge.

In this way, the adhesive 2 containing the short fibers 7 is applied to the surface of the lamina 1. Therefore, as shown in FIGS. 2 and 3, the lamina 1 with the adhesive 2 is applied to another lamina 1. Just crimp.

The adhesive 2 containing the short fibers 7 may be arranged between all the lamina 1, but at least the outer layer portion of the wooden lamina 1 to be laminated, that is, the lamina laminate 4
Between the lamina 1a, 1a located in the outermost layer and the lamina 1, 1 inside them, or between the lamina 1, 1 in the vicinity thereof.

The laminated material 5 thus obtained has the high-rigidity short fibers 7 having excellent tensile properties in the outer layer portion of the lamina laminate 4, that is, the portion which becomes a tensile side and tends to expand when a bending load is applied. Since they are fixed by the adhesive 2 and arranged, the bending deformation is prevented by the short fibers 7 and therefore the bending characteristics are improved. Therefore, when the bending material is formed not only as a straight material but also as a curved material. Also, a material having high bending rigidity can be obtained.

〔The invention's effect〕

As described above, according to the method for manufacturing a laminated wood of the present invention,
When laminating multiple wooden lamina to obtain laminated wood,
At least the fibers as the reinforcing material can be arranged between the lamina of the outer layer portion of the laminated wooden lamina by simply changing the step of applying an adhesive to the conventional lamina surface, and it is easy and easy to carry out in the flow operation. Since the fiber as the reinforcing material can be quickly arranged, the number of manufacturing steps is small and the cost is low.

Moreover, in the method for manufacturing the laminated material, since the lamina constituting the laminated material is moved in the lengthwise direction, the manufacturing can be performed quickly and accurately by a flow work, and particularly, regarding the application of the adhesive, Since it is done using the coating hopper with a built-in agitator installed above the wooden lamina that moves in the length direction, it is possible to always apply a fixed amount of adhesive material to the position that will become the laminating surface of the lamina accurately. , You can get the product with high accuracy.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a method for manufacturing laminated wood according to the present invention, FIG. 2 is a perspective view of a main part of the following steps, FIG. 3 is a front view of the same, and FIGS. Is a perspective view of each step showing a conventional example, FIG. 7 is a perspective view of another conventional example, and FIG.
It is a side view of a process. 1, 1a ... Wooden lamina, 2 ... Adhesive, 3 ... Coating hopper, 4 ... Laminated body, 5 ... Glued wood, 6 ... Long fiber, 7 ... Short fiber, 8 ... Stirrer, 9 ... Short fiber hopper, 10 ... Adhesive hopper 11 ... jig

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kansuke Honma 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (56) Reference JP-A-48-5904 (JP, A) Kai 52-151332 (JP, A) JP 60-135211 (JP, A) Actual 63-121508 (JP, U) Actual flat 2-137971 (JP, U)

Claims (1)

[Claims] 1. A method of manufacturing a laminated wood by laminating and joining a plurality of wooden lamina, wherein the wooden lamina is moved in a longitudinal direction, and a coating hopper having a stirrer is installed above the wooden lamina, The short fiber and the adhesive are put into the hopper, the mixture of the short fiber and the adhesive is discharged from the outlet of the coating hopper toward one lamina surface, and the lamina is pressure-bonded to each other, and the wooden lamina is laminated. A method for manufacturing laminated wood, characterized in that at least the lamina of the outer layer portion is joined.